Credit & Debit Memo Issue

Question

Hi All,
Once i created the Billing and issue to the Customer , my problem is due to some reason my client want to increase or decrease the price for that particular Invoice or Multiple Invoices
and also one more important point is accounting document is open (  Payment is not happened ) some invoices
I have checked the Retro billing Its not working
Can you please tell me how to handle this In SAP because i am new to this scenario
Regards,
Prasanna

Answer 1

Hi,
In VOV8 you can check that Invoice Correction document has "D" as indicator due to which there are two item generated for Copy control, which you can check in VTAF ( copy from Invoice to Order).
Invoice correction request, has SD doc category as K - Credit memo request, and Indicator as D - Invoice correction request.
The indicator "D - Invoice correction request" will control the debit and credit line with the difference.
The standard docment type is RK (T.code VOV8) define in the system for invoice correction request. The credit memo (G2 as standard) will be created as billing document.
An invoice correction request has the following structure:
Header
This contains the data that is relevant for the whole invoice correction request, e.g. sold-to party and payer.
Item pairs
The system creates two items in the invoice correction request for each item in the invoice:
                     Item              Indicator
First item       Credit item     Credits
Second item   Debit item      Debits
You can also set the system so that it doesnu2019t repeat pricing.
You can control this in Customizing under Sales and Distribution  Billing  Billing documents Maintain copying control for billing documents in the Pricing type field.
The contents of the field depend on the category of the invoice correction request.
Sales document category    Field contents
CR (credit memo request)   E
DR (debit memo request)    F
You can run new pricing for the debit memo request by defining another pricing category in the pricing category field 2.
3.  In the credit item, the system completely credits the incorrect invoice item. You cannot change the credit item (apart from the Deletion, Reason for rejection, Billing block and Account assignment fields).  Enter the correct price or quantity in the debit memo item. You can let a new pricing run for the item. The correct amount is finally posted.
4.  The system calculates the difference between the credit and debit memo item. If there are several corrected items, the system cumulates the values of all the items and calculates a total value.
5.  As in credit and debit memo requests, you can:
- Set a billing block for the invoice correction request (or change the settings in the billing type in Customizing so that the system does it automatically).
- Enter a reason for rejection for one or several items. 
You can only delete credit items together with their corresponding debit items. You delete items that you havenu2019t changed with a function.
7.  The system generates a credit memo. If the total value is positive, the credit memo item does not have a + sign, if the total value is negative, it has a u2013 sign.
If the invoice correction request is characterized as a debit memo request, the opposite occurs.
8. The title of the printout for the credit or debit memo depends on the characteristic that has been assigned to it (sales document category) and not the total value:
Sales document category     Title
CR (credit memo request)   Credit memo
DR (debit memo request)    Debit memo
In the credit item, the system credits the customer with the full value. If you change the debit item (for example, due to new pricing or a change in quantities), this results in a difference amount.
The price condition types used in invoice and in the invoice correction has to be the same. (new condition type added in invoice correction will be ignored).
Regards,
Saju.S